Door check



Dec. 19, 1922.

E. C. AKERS. DOOR CHECK. ORIGIIINAI. mzo 061223, 1920.

la Q Renewed implication filed- @ctob jseriaim'o. 559,897.

We, Serial No.41

ie the the fully set i 60 ject to PIOVH ETQLLUI'QS 1 com iii-e more nitsin new ei' ci showthe um 1 oh useful anti UVQII to clos Jung 'e hiveiien'ts eouii t y ()"(ifr he; :lliTGt Jetrmt in th he i i it known 0 enof :e; ion

* per perhowing Li tihowin f a friction and endv 818 Meek plan View :2.pee

an i Z are s Ti eiv of a ti Fis Wiii not 7 av The resist/mo icieiit to001 is ooened hieh are xiii 1 "10' or iretai t be SH the of in theclosing movenie nent of sill swin gin mover he s Wingin 1 known sheiltlfllged to come at; U door comes;

essened thereby and king means mus slam by Iii th ehec vent its peat W)Lu the d i iing when etched 9i) e iiooi' and es a door

.e WGI ening, am

pen

, om this i my or suitzihle power 1on1: when swung 1i Ge own in the(ii-s ST or other ed e doe:

the

shown as att is swing;

upon 1111 50 ic-si mince W' to me i 11;; under 1 news, when ie full spoi evice 1 tt al O s 11 not he ow sing i he eel d sion only by a p iand full e put 11 its full fw'ce ih swim position, bu cient to preven fthe dos erted, as when the eiosin dei' partial ten 1" the door,

23 power 0 Will st when the door and the benefit 0 An oh jec't 0 40 anautomatic ad us n kl u ositioh. er device lie poi h the openi ee toautomatiy the ewiii he in i L retarding means Whereh such mean Dower ofthe closing Inf ow;

jtei'i'e d the increase 61' Y cah he poeitioiiv mo'vei. I] closed thenu-pose.

iei'to its re Jung, ,ahiit h; i

the door; asiwhen the doomis opened at making .Rufl'icltfli) ea'nsavailable e the complete under all COIlCil'tIOnS.

thus

5% e degree ()Ti distance '1? the clam oi it short power 0 less 0;. i

insm' n h' o "eat is to pi ovi 1e A further oh the ricer to com floorHIPRHS m an nay he cheepi winner and is; JZUtiCUiLUTiY (1d i'veiy h iconstru e ieii use upon tion means according to the variation of thepower of the closing means and the resistance required to check the doorunder the influence of such power, and prevent vslamming.

its illustrative of suitable friction means which may be employed forthe purpose, acam blocl; i shown as being secured to the casing C justabove the upper edge of the door and adjacent the free edge of the door.This block 1 has a curved side edge 2 which d to be engaged by afriction block 7 i by a swinging 'armpivotally at tached at Zito' plate6 which is secured any suitable manner to the face of the door adjacentits free edge and ju t below the cam block 1, in sucn a position thatthe friction block will engage the forn'ied edge 2 and ride against thesame the doorswings upon its hinges to closed position. As shown in pthis cam block 8 is pivotall} supported upon the upper end of the arm loy being; provided will a hole therein to receiv a pin or stud 7eirtendiiu;- from the end of the arm, the block beingfree to turn uponthis stud and resting upon a plate or head 8 seem-e5 upon the end thearm turning movement of the block 3 is limited misdirection by stop 9 onthepla-te 8 and is normally held in engagement with ti s stop by meansof a pin 10 on the plate extending vertically therefrom and having arounded upper end engaging an inclined sur face of a notch in the bottomend of the block. I i

is the friction block 3 comes into contact with the ca m block 1, said.friction block is free to turnupon its stud 7 and adjust itself to liecurved edge 2 of the cam block thus presei'iting a wide friction surfaceto said edge. By prop rly iositioning the stop 9 the friction bloc-inwhen out f contact with the cam block, will be held in the properangular relation relative to its contact side squarely into engagementwith the surface 2 of the cam block when the door swings toward closedposition but is free adjus itself tosaid surface 2 as it s alon incontact therewith, by reason free to turn upon its stud 7, said blockbeing; lifted bodily as it turns away from the stop the eng ement of thepin 10 with the inclined c 106 11 on the slack. [is soon as the frictionbloc passes out of engagement with the cam blocln said friction blockwill fall by gravity, sliding down upon its stud 7' and 111168211118time being; turned by the engagement of the pin 10 with the surface 11,into engagement with the stop 9 i i To firmly hold the friction block 3in contact with the surface 2 when brought into engagement therewith andthus provide a tional resistance to the closing movement iric of thedoor, coiled spring attached at The its arm "I to bring one end to thearm at carrying the block 8 and 'byreason of the pivotal ttachment ofthe arm to the door by the pivot 5, said fll'il. will be swung upon itspivot by the spring 12 and be normally held in a position to en the camblock 1, the arm a being limited in its swinging}; movement by providinga guide 13 upon the plate 6," the ends of wiich guide form stops tolimit the swinging movement ofthe arm in each direction. To adjust thetension of the spring 12 so that the friction block 3 will be held withgreat or force in cont-act with the cam block accordingto the amount offriction required to prevent slamming, the opposite or rear end of thissprin i2 attached to ad ting rod i l; which passes through an opening;in a stud lo pivotally attached to a toothed segment if mounted upon aplate 1? bred in any suitable manner to the face of the door adjacentthe hinged edge thereof and near the upper end of the door. The end ofthe rod i l which passes through the opening in the stud 1.5, isscrewthreadeiil to receive an adjusting nut 18 apted to the side of thestud and adjust the rod long e .aina-lly through the stud to vary theinitial tension of the spring 12. The segment 16 i pivotally attached tothe plate 17 by the pivot pin 19 and this segmel 2 has a later y andrearwardly extending arm 20 hich is formedintegral with the segment orsecured thereto to turn therewith. A contact block 21 is secured to thedoor casing C adjacent the plate 17011 the door and in such positionthat when the door is swung to open position the arm 20 will he broughtinto contact with the block 1 and thus turn the segment 16 upon itspivotal support 19.

position of'the arm 20 is such segment will be turned in the proper rtion to exert a pull upon or automatically set the spring 12 through itsconnection notches in the edge 01. the segment and thus lock the segmentin the position to which isturned by the engagement of the 20 with thecontact member 21. Pivotally attached to the door casino; C ectly abovethe plate 17 on the doorfis gr .elty block 24 which is hinged orotherwise pivotally attached at its upper edge at 25 to the door casing,and has its lower side cut away as at 6 permit an arm or hooh 27 on thepau "l'QQ to pass beneath the block as the door swings towad closedposition, the upper end of the arm 2'? of the pawl-'22 engaging theblock andliftin'g it against the force of gravity as the arm pa sesbeneath it. i l hen the door comes to a closed position the arm 2'?passes from beneath the end of the block and when the door is againswungtoward open position, this arrn ishroug t by the swinging movement ofthe door into engagement with a coin plate 28 on the end of thehlocl:having a torwardly inclined co n i arm 27 rides as the door swings open,forcing the arm away from the l wity block and turning the pa '2 pivot,thus releasing; the pawl iroz engagement with the toothed V1116 -7 w ichis then to turn and release the tension of the i 12. The first incre-Fi'ttllt oi? the rim r1 positi in engagement with which the i i thus )rnclosed there fore relieve the tension of the s been previously set h tie V the door to open position. irictionrrl contact between the iii 5 andits cam iilOtilZ 1 will hen .re he at once relieved and permit the treeopenino movement of the door. i

This release of the tension of the spring 12 the very beginning theopening increment of thedoor, eliminates the friction which wouldotherwise he i ncrensed by the tension put upon the spring by theprevious opening movement of the door which sets the Spring, andtherefore, it, a child. in passing through the'door way, should open thedoor but a short distance, and then release it, the closing spring Bwould have suliicient force to fully close the door, as in thiscondition the door will be checked in its closingmovement by the"friction caused by the initial adjustment the spring 12 which isefiected through the provision of the adjusting nut 18,

Shoult the door he swung to hall. open position, or approximately so,the arm will he brought into contact with the contact member 21 and thespring 12 will then he put under an increased tension or auto nisticallyset thereby, as previously descrfhed, tut this tension will not he asgreat :is though the door he swung to full open position for the reasonthat this partial swinging movement will turn the sector 16 only a shortdistance. However the spring" will he put under sufficient tension tochecl: the door and prevent slarnining when closed by the tension underwhich the spring l) is placed by this partial opening the iVhen the dooris opened to the fullest,

will turn tence, pu parativel the hlocl: er, whic to turn the pawl an; 3The tension cit ti nietics ie deg ueui .nd

an which the scope V appended claims as end d in the cam bio l andfriction hlocl: may he employed, and other mechanism than thepawl andsector with its operating and releasing arms may be employed to adjustthe checking means and vary its operation according to the force of theclosing means, or spring I), and th degree to which the door is opened,

h r, such other changes in the construction and arrangement of parts asfell within the scope of the appended claims may he made withoutdeparting "from the spirit of this invention and it do not thereforelimit myself to the particular mechanism shown.

Having thus fully described my invention, what I claim is 1. in a deviceof the character described, the combination of means for retarding theclosing; movement of a closure, including a spring, and means forautomatically varying the tension of said spring to vary the retardingeffect of said retarding means in proportion to the opening movement ofthe closure.

2. ln a device of the character described, the combination of means forchecking or retarding the closing movement of a closure includine' asorine and means for var ins" (J \Jj (J the tension of the spring,operated by the opening movement of the closure.

In device of the character described, the combination of means forchecking the closing movement of aclosure including a spring, meansoperated by the opening movement of the closure for varying the tensionor": said spring, and means for automatically releasing the tension ofsaid spring.

4-. In a device of the character described, the combination of means forfrictionally retarding the closing movement of a closure, and meansautomatically operated by the swinging of the closure toward openposition for increasing the frictional resistance of said retardingmeans.

5. A. device as characterized in claim 4-, and including means operatedby a, limited movement oft-he closure for releasing the increasedfrictional resistance of the retarding means. H

6. In a device ofthe character described. theconibination of o'ean'imember adapted to be secured to a closure casingadjecent theffeeedg'e ofthe closure, a'fi'iction member carried by the ciosnre and mea'ns"f0rvieldingly holding; the i'fiction inember in position to i'z'ictioneilyengage the cam member.

7. A device as characterized in chin; 6, end wherein the friction memberis rotama supported upon at pivoted zum to toward and from thenien'iher.

SQA device chzueecte ized in cieimfii and ineiucting neai'as cai ried hythe. door erfiecent its hinged edge and operated by an opening;'movement of the door for putting the yielding means under tension.

9. In a device of the chzttacterfdescrihed, the combination of nieenstor'che'cking the closing movement of a door and including a spring,aipivoted nieinber adapted to be turned hy'an openingmovement of thedoor and to which'eaid spring is connectedto'be put Under tension bysuch turning movement, means tor holding said pivoted membe;- inthepositionto which it is turned, and means for r'eleesing'said member.

10. In a device of the character described,

the combination of at cm nieniher adapted to be secured to edooi' cagedjoeentthefree edge of the door, a friction member cai'ried by thedoor to engage the cam nierhber npon the swinging the door to a closedposition, a. sprin to yieldingiyhold the triction'memher in position toengzige the'cam member, a toothed segment pivot-ally attached to thedoor adjacent the hinged edge thereof,

means for oomnecting one end 01 the sipping to said toothed member. anarm onfthe toothed jmembei'. means on the door casing for engag ng thearm when ie door 18 swung towards open position to rotzte theliftestimony wheneofl affix my signature inpresence of two witnesses. 1I EARL G. AKERS.

fi ss c ALNNA Mi Donn, ARTHUR MINNIOK.

